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Fabrication and temperature dependent magnetic properties of Co-Ni nanotube arrays

文献类型：期刊论文

作者Chen, Yonghui2; Maaz, Khan1; Lyu, Shuangbao2; Cheng, Yaxiong2,3; Liu, Jie2
刊名PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
出版日期2019-06-01
卷号110页码:123-126
关键词Co-Ni nanotubes Electrodeposition Polycarbonate template Bloch's law Saturation magnetization
ISSN号1386-9477
DOI10.1016/j.physe.2019.02.004
通讯作者Chen, Yonghui(yhchen@impcas.ac.cn)
英文摘要Parallel arrays of Co-Ni nanotubes with external diameter of 150 nm, wall thickness of 20 nm, and length of about 0.8 mu m were successfully fabricated in ion-track etched polycarbonate (PC) templates by electrochemical deposition. The morphology and composition of the nanotubes were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). Temperature dependent magnetic analyses were performed with superconducting quantum interference device (SQUID) magnetometer which indicate that saturation magnetization of the nanotubes follows modified Bloch's law in the range 80-300 K. An abrupt deviation of the experimental curve (increase in magnetization) was observed from the modified Bloch's law below 80 K, which can be attributed to the disordered surface spins in the nanotubes due to the finite size effects. Finally, it was found that coercivity measured at different temperatures follows Kneller's law within the premises of Stoner-Wohlfarth model for ferromagnetic nanostructures.
WOS关键词SURFACE SPIN DISORDER ; SIZE ; NANOPARTICLES ; ELECTRODEPOSITION ; ALLOYS
资助项目National Natural Science Foundation of China[11375241] ; National Natural Science Foundation of China[11175221] ; National Natural Science Foundation of China[11005134] ; National Natural Science Foundation of China[11275237] ; West Light Foundation of Chinese Academy of Sciences (CAS)
WOS研究方向Science & Technology - Other Topics ; Physics
语种英语
WOS记录号WOS:000460542000020
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; West Light Foundation of Chinese Academy of Sciences (CAS)
源URL[http://119.78.100.186/handle/113462/134672]  
专题中国科学院近代物理研究所
通讯作者Chen, Yonghui
作者单位1.PINSTECH, Phys Div, Nanomat Res Grp, Islamabad 45650, Pakistan
2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
3.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Yonghui,Maaz, Khan,Lyu, Shuangbao,et al. Fabrication and temperature dependent magnetic properties of Co-Ni nanotube arrays[J]. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,2019,110:123-126.
APA Chen, Yonghui,Maaz, Khan,Lyu, Shuangbao,Cheng, Yaxiong,&Liu, Jie.(2019).Fabrication and temperature dependent magnetic properties of Co-Ni nanotube arrays.PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,110,123-126.
MLA Chen, Yonghui,et al."Fabrication and temperature dependent magnetic properties of Co-Ni nanotube arrays".PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 110(2019):123-126.

入库方式： OAI收割

来源：近代物理研究所

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